Angular displacement

About: Angular displacement is a research topic. Over the lifetime, 5102 publications have been published within this topic receiving 46081 citations. The topic is also known as: rotational displacement.

Axial spline drive lug

Abstract: An axially toothed gear mechanism for transmitting torque and angular displacement from a driving member to a driven member which can accommodate a slight angular mismatch between the two, and which minimizes backlash and wear of the teeth.

Angle sensor with inductive coil coupling

Abstract: An angle sensor (1) with a rotatably arranged transmitter part (5) and a fixed transmitter part (9). The rotatable transmitter part (5) has a coil (10) which can be connected to a source of alternating current, is wound helically on a support and extends on both sides of an axis of rotation (53) with longitudinal axis extending transverse to it. The fixed receiver part (9) contains at least one sensor for electromagnetic fields which is arranged facing and spaced from the coil (10). The sensor extends on both sides of the axis of rotation (53) transverse to it and is connected on the output side to a circuit which has circuit components (22, 23, 24, 25, 26) for compensating for the deviations of the output signal or signals of the stationary receiver part (9) from a fixed relationship of the angular position of the rotatable transmitter part (5) and the output signal or signals of the stationary receiver part (9) which are caused by asymmetries or inaccuracies in the arrangement of the transmitter and receiver parts (5, 9).

Kinetic characteristics analysis of a new torsional oscillator based on impulse response

Abstract: For reducing the sticking or stick–slip phenomenon, this paper proposed a new torsional oscillator which could produce a circumferential torque vibration in the drilling process. Based on the working principle and fundamental structure, the generation mechanism of torsional vibration and the relationships of the mechanical parts are derived. Then, the dynamic model is established according to the drilling operation condition. With this, the further analysis of changing relationship between the inlet flow and torque is studied. The angular displacement and velocity of the valve body are analyzed according to the dynamics theory models. With the combination of the theoretical analysis model, the parameter studies are carried out by numerical example calculation. Finally, experiment test is conducted to identify the accuracy and reliability of the calculation method under the corresponding working conditions. The results show that with the constant pressure the average torque is proportional to the inlet flow. However, while the inlet pressure is invariable, the collision period is inversely proportional to the inlet flow, and the angular displacement and velocity are proportional to the inlet flow. The research results can provide references for the design and application of the torsional vibration tools, which is potential and significant in drilling engineering.

Dynamics and control of slew maneuver of large flexible spacecraft

Abstract: In this paper, the dynamics and control of slewing maneuvers of a large flexible spacecraft namely. NASASpacecraft Control L aboratory Experiment (SCOLE) test article are studied. The dynamical equations o btained for slewing maneuvers are highly nonlinear and coupled. The maneuver is expressed in terms of four Euler parameters and is specified a s the angular displacement about an arbitrary axis. The slew maneuver control problem is developed in terms of rigid-body slewing and suppression of two elastic modes is analyzed using the method of nonlinear decoupling. Nomenclature: Position v ector of mass element on the beam from the point of attachment Position v ector from the point of attachment to the mass center Displacement vector of mass element i n the body- fixed frame Force applied at the orbiter mass center Force applied at the reflector mass center Moment applied about the orbiter mass center Hass moment of inertia matrix of the shuttle Mass moment of inertia matrix of the ref lector The length of the beam Total mass of the f lexible beam Iass of the orbiter Mass of the r eflector

Method and apparatus for providing runout compensation

Abstract: A wheel alignment system includes a gauge head which is adapted to be pendulously mounted to a wheel to be aligned for free rotation about an axis which is coaxial with the axis of rotation of the wheel. The gauge head carries a plurality of level sensors, which are coupled to a microprocessor, and an encoder which is mounted between a shaft, that is mounted to the wheel for rotation therewith, and the gauge head to transmit to said microprocessor signals representative of the angular position of said wheel.